特集：有機半導体デバイスにおける構造と電子物性
有機発光デバイスにおける分子配向の効果
キーワード:
molecular orientation,
organic light-emitting diodes,
deposition temperature,
glass transition
2014 年 35 巻 4 号 p. 178-183
詳細
2014 年 35 巻 4 号 p. 178-183
Controlling molecular orientations in non-crystalline thin films fabricated from small molecules by varying the substrate temperature during the vapor deposition, influences of molecular orientation in organic light-emitting diodes were investigated. With the randomly oriented host matrix in a light-emitting layer, efficiency roll-off was suppressed by 30% at a current density of 100 mA cm−2, while the external electroluminescence quantum efficiency was greatly enhanced by 24% with the horizontal orientation of a linear-shaped fluorescent dopant.
